Recent mass-balance changes of Agua Negra glacier (30°S) in the Desert Andes of Argentina
Abstract The Desert Andes contain >4500 ice masses, but only a handful are currently being monitored. We present the mass changes of the small mountain glacier Agua Negra (1 km 2 ) and of the rest of glaciers in the Jáchal river basin. Remote-sensing data show Agua Negra glacier lost 23% of its a...
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2022
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Online Access: | http://dx.doi.org/10.1017/jog.2022.22 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143022000223 |
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crcambridgeupr:10.1017/jog.2022.22 2024-05-19T07:43:14+00:00 Recent mass-balance changes of Agua Negra glacier (30°S) in the Desert Andes of Argentina Pitte, Pierre Masiokas, Mariano Gargantini, Hernán Ruiz, Lucas Berthier, Etienne Ferri Hidalgo, Lidia Zalazar, Laura Dussaillant, Inés Viale, Maximiliano Zorzut, Valentina Corvalán, Ernesto Scarpa, Juan Pablo Costa, Gustavo Villalba, Ricardo Ministerio de Ciencia y Tecnología (MinCyT)-ECOS Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-Ministerio de Ambiente y Desarrollo Sostenible Centre National d'Etudes Spatiales Agencia Nacional de Promoción Científica y Tecnológica Pléiades Glacier Observatory 2022 http://dx.doi.org/10.1017/jog.2022.22 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143022000223 en eng Cambridge University Press (CUP) https://creativecommons.org/licenses/by/4.0/ Journal of Glaciology volume 68, issue 272, page 1197-1209 ISSN 0022-1430 1727-5652 journal-article 2022 crcambridgeupr https://doi.org/10.1017/jog.2022.22 2024-04-25T06:51:26Z Abstract The Desert Andes contain >4500 ice masses, but only a handful are currently being monitored. We present the mass changes of the small mountain glacier Agua Negra (1 km 2 ) and of the rest of glaciers in the Jáchal river basin. Remote-sensing data show Agua Negra glacier lost 23% of its area during 1959–2019. Glaciological measurements during 2014–2021 indicate an average annual mass balance of −0.52 m w.e. a −1 , with mean winter and summer balances of 0.80 and −1.33 m w.e. a −1 , respectively. The Equilibrium Line Altitude (ELA) is estimated to be 5100 ± 100 m a.s.l., which corresponds to an Accumulation Area Ratio (AAR) of 0.28 ± 0.21. Geodetic data from SRTM X and Pléiades show a doubling of the loss rate from −0.32 ± 0.03 m w.e. a −1 in 2000–2013, to −0.66 ± 0.06 m w.e. a −1 in 2013–2019. Comparatively, the ice losses for the entire Jáchal river basin (25 500 km 2 ) derived from ASTER show less negative values, −0.11 ± 16 m w.e. a −1 for 2000–2012 and −0.23 ± 14 m w.e. a −1 for 2012–2018. The regional warming trend since 1979 and a recent decline in snow accumulation are probably driving the observed glacier mass balance. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 1 13 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract The Desert Andes contain >4500 ice masses, but only a handful are currently being monitored. We present the mass changes of the small mountain glacier Agua Negra (1 km 2 ) and of the rest of glaciers in the Jáchal river basin. Remote-sensing data show Agua Negra glacier lost 23% of its area during 1959–2019. Glaciological measurements during 2014–2021 indicate an average annual mass balance of −0.52 m w.e. a −1 , with mean winter and summer balances of 0.80 and −1.33 m w.e. a −1 , respectively. The Equilibrium Line Altitude (ELA) is estimated to be 5100 ± 100 m a.s.l., which corresponds to an Accumulation Area Ratio (AAR) of 0.28 ± 0.21. Geodetic data from SRTM X and Pléiades show a doubling of the loss rate from −0.32 ± 0.03 m w.e. a −1 in 2000–2013, to −0.66 ± 0.06 m w.e. a −1 in 2013–2019. Comparatively, the ice losses for the entire Jáchal river basin (25 500 km 2 ) derived from ASTER show less negative values, −0.11 ± 16 m w.e. a −1 for 2000–2012 and −0.23 ± 14 m w.e. a −1 for 2012–2018. The regional warming trend since 1979 and a recent decline in snow accumulation are probably driving the observed glacier mass balance. |
author2 |
Ministerio de Ciencia y Tecnología (MinCyT)-ECOS Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-Ministerio de Ambiente y Desarrollo Sostenible Centre National d'Etudes Spatiales Agencia Nacional de Promoción Científica y Tecnológica Pléiades Glacier Observatory |
format |
Article in Journal/Newspaper |
author |
Pitte, Pierre Masiokas, Mariano Gargantini, Hernán Ruiz, Lucas Berthier, Etienne Ferri Hidalgo, Lidia Zalazar, Laura Dussaillant, Inés Viale, Maximiliano Zorzut, Valentina Corvalán, Ernesto Scarpa, Juan Pablo Costa, Gustavo Villalba, Ricardo |
spellingShingle |
Pitte, Pierre Masiokas, Mariano Gargantini, Hernán Ruiz, Lucas Berthier, Etienne Ferri Hidalgo, Lidia Zalazar, Laura Dussaillant, Inés Viale, Maximiliano Zorzut, Valentina Corvalán, Ernesto Scarpa, Juan Pablo Costa, Gustavo Villalba, Ricardo Recent mass-balance changes of Agua Negra glacier (30°S) in the Desert Andes of Argentina |
author_facet |
Pitte, Pierre Masiokas, Mariano Gargantini, Hernán Ruiz, Lucas Berthier, Etienne Ferri Hidalgo, Lidia Zalazar, Laura Dussaillant, Inés Viale, Maximiliano Zorzut, Valentina Corvalán, Ernesto Scarpa, Juan Pablo Costa, Gustavo Villalba, Ricardo |
author_sort |
Pitte, Pierre |
title |
Recent mass-balance changes of Agua Negra glacier (30°S) in the Desert Andes of Argentina |
title_short |
Recent mass-balance changes of Agua Negra glacier (30°S) in the Desert Andes of Argentina |
title_full |
Recent mass-balance changes of Agua Negra glacier (30°S) in the Desert Andes of Argentina |
title_fullStr |
Recent mass-balance changes of Agua Negra glacier (30°S) in the Desert Andes of Argentina |
title_full_unstemmed |
Recent mass-balance changes of Agua Negra glacier (30°S) in the Desert Andes of Argentina |
title_sort |
recent mass-balance changes of agua negra glacier (30°s) in the desert andes of argentina |
publisher |
Cambridge University Press (CUP) |
publishDate |
2022 |
url |
http://dx.doi.org/10.1017/jog.2022.22 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143022000223 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 68, issue 272, page 1197-1209 ISSN 0022-1430 1727-5652 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/jog.2022.22 |
container_title |
Journal of Glaciology |
container_start_page |
1 |
op_container_end_page |
13 |
_version_ |
1799482946109833216 |